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T. H. HALLIDAY.

SPRING BED. N0. 320,552. j. Patented June Z3, 1885.

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UNITED STATES THOMAS H. HALLIDAY, OF

PATENT OFFICE.

BROOKLYN, ASSIGNOR 'IO NAT H. VAN YVINKLE, OF NEW YORK, N. Y.

SPRING-BED.

QPECIFECATION forming part of Letters Patent No. 320,552` dated June 23, 1885.

Application filed August 7, 1884. (Noinodel.)

120 wZZ whom t may concern.-

Be it known that I, THoMAs H. HALLTDAY, a citizen of the United States, residing in Brooklyn, in the county of Kings and State of 5 New York, have invented a new and useful Improvement in Spring-Beds, of which the following is a specification.

` The object of my invention is to provide a bed-bottom or mattress which can be fitted to 1o bedsteads of different sizes; and I accomplish this by means of an arrangement of parallel slats, double-jointed arms, guide-bars, braces, and spiral springs, as hereinafter set forth in detail, and illustrated in the accompanying 15 drawings, in Which- Figure l is a plan view of the bed-bottom extended. Fig. 2 is a plan View of the same shut up. Fig. 3 is a side elevation of a portion ofthe same. Fig. 4 is an end section on the line a: x in Fig. 1.

Similar letters refer to similar parts in the several views.

A are parallel slats forming the framework upon which the spiral springs D rest.

B are upper outside slats, which rest upon the springs D, and which are also connected with the frame-work formed by the slats A by means of the supporting -brace E, which is pivoted at one end to the upper slats, B, and at the other end to the double-jointed arms O, which are in turn pivoted to the slats A and to each other in such a manner that said slats can be moved toward or away from each other. rI`he arms O are also extended beyond the outside slats, A, until they meet the guidebar F, having slots a. The ends of the arms Care so attached to the bar F by means of bolts and washers as to permit motion in the slots a in a direction parallel to the slats A.

For purposes of shipment and before i use the bed-bottom assumes the position shown in Fig. 2, the slats and the guide bars being pressed close to each other, and the. jointed arms and braces being nearly parallel With said slats and guidebars. When tted to a bedstead, the slats are drawn apart to the requisite width, and the jointed arms and angles to the slats and guide-bars.

The double 7 jointed arms insure regular and perfect motion, so that it is impossible when the slats are opened and closed for the bedAbottom to get out of working order, which frequently happens in the case of single links or arms.

The guide-bar prevents any twist or endwise motion of the bed-bottom, because the slots a hold the ends of thcjointed arms firmly in poA sition. The guide-bar also forms a leverage in closing up the slats. Although only one bar is shown in the drawings, an additional one or more may be used, if desired.

The braces E `moving in unison with the doublejointed arms C keep the upper slats, B, at the same relative distance from each other in opening and closing the bedbottom, and also keep them at all times exactly the same distance from the lower slats, A.

The whole forms a neat and effective bedbottom or mattress, with all the parts arranged to insure economy of space and per feet motion without liability of derangement.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a bed-bottom, the combination of the lower slats,A, spiral springs D, double-jointed arms C, upper slats, B, and braces E, pivoted at one end to the joints ofthe double-jointed arms O, and connected with the upper slats, B, as and for the purpose specified.

2. In a bedbottom, the combination of the lower slats, A, springs D, upper slats, B, braces E, pivoted to the slats B, and the arms O, the double-jointed arms C pivoted to each other and to the slats A, and the guide-bar F, with slots a, all arranged substantially as described, and for the purposes specified.

THOMAS H. HALLIDAY.

Titnessesz NAT H. VAN WINKLE, WM. F. Gonwrrn.

lbraces take a position more nearly at right 

